Commercial Manager

Siemens España; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Flexible working

Mental health support

Subsidised gym memberships

Subsidised healthcare (Bupa)

Job summary

Siemens Mobility in the United Kingdom is seeking a Commercial Manager to join the team in Three Bridges, Crawley, promoting hybrid working with three on-site days per week. You will manage commercial outcomes for the Thameslink Programme, partner with project management and stakeholders to ensure contract performance and financial results.

The role requires experience in commercial environments, ability to work under pressure, and strong negotiation and communication skills.

Qualifications

• Part or Qualified accountant, CIMA/ACCA or equivalent.
• Experience with SAP (Spiridon or similar).
• Strong contractual and commercial knowledge.
• Experience in a commercial role.

Responsibilities

• Contract management and analysis; drive fulfilment of requirements whilst ensuring the best operational / commercial outcomes for the project and Siemens; negotiation of any arising contract disputes with the Customer.
• Preparation and calculation of outgoing Variation Proposals, analysis of incoming Variation Proposals, negotiating with the Customer.
• Correspondence management with Customer and Suppliers in accordance with documented contractual processes.
• Identification and preparation of Additional Services and Claims and negotiating settlements with Customer / Suppliers.
• Risk & Opportunity management; drive ownership among project management team for mitigation of risks and realisation of opportunities.
• Maintenance of accurate and up-to-date Percentage of Completion models for multiple large and complex projects.
• Coordinate finance processes (forecast, budget, month-end closing); ensure Financial Statements comply with Siemens guidelines and local GAAP.
• Provision of accurate and timely management information to project management, Finance function and local and divisional HQs.
• Work closely with project managers and operational colleagues to support process and productivity improvement initiatives.
• Drive innovation / digitisation initiatives within the commercial function and the project.

Skills

Negotiation skills

Communication skills

Pressure management

Analytical thinking

Education

CIMA/ACCA or equivalent

Part or Qualified accountant

Tools

SAP

Spiridon or similar

Job description

Closing date: 18th November 2026. Please note, we may close this advert earlier than advertised if we receive a high volume of applications, so we encourage you to apply as soon as possible.

Innovation is at the heart of everything we do at Siemens Mobility. We are on a quest to solve the most complex mobility challenges with groundbreaking technology and creative solutions. As part of our diverse and driven team, you will have the opportunity to shape the future of transportation. Imagine contributing to innovations that touch millions of lives – ready to make that a reality?

Our Rolling Stock and Customer Service keeps trains running safely and reliably every day. The business delivers expert maintenance, technical support and digital solutions across the full lifecycle of rail fleets, helping customers maximise performance, availability and passenger satisfaction.

Siemens Mobility have an exciting opportunity for a Commercial Manager to join their team working in Three Bridges, Crawley. This role promotes hybrid working and requires 3 days on site per week!

You will be responsible for part of the government sponsored Thameslink Programme and will work in a motivated and driven commercial team. You will work in partnership with the project management team and other stakeholders to ensure effective contract management and financial performance.

You'll create an impact by:

• Contract management and analysis; drive fulfilment of requirements whilst ensuring the best operational / commercial outcomes for the project and Siemens; negotiation of any arising contract disputes with the Customer.
• Preparation and calculation of outgoing Variation Proposals, analysis of incoming Variation Proposals, negotiating with the Customer.
• Correspondence management with Customer and Suppliers in accordance with documented contractual processes.
• Identification and preparation of Additional Services and Claims and negotiating settlements with Customer / Suppliers.
• Risk & Opportunity management; drive ownership among project management team for mitigation of risks and realisation of opportunities.
• Maintenance of accurate and up-to-date Percentage of Completion models for multiple large and complex projects.
• Coordinate finance processes (forecast, budget, month-end closing); ensure Financial Statements comply with Siemens guidelines and local GAAP.
• Provision of accurate and timely management information to project management, Finance function and local and divisional HQs.
• Work closely with project managers and operational colleagues to support process and productivity improvement initiatives.
• Drive innovation / digitisation initiatives within the commercial function and the project.

Your role profile may vary from time to time in accordance with business needs. Your annual objective setting with your line manager will outline any additional responsibilities required to meet business or individual development needs for the forthcoming financial year.

Your success will be grounded by:

• Ability to work under pressure and meet tight deadlines.
• Part or Qualified accountant, CIMA/ACCA or equivalent preferable.
• Technically proficient in contractual terms and conditions.
• Experience of working in SAP (Spiridon or similar).

Must Haves:

• Prior experience in a commercial role.
• Experience working collaboratively in multi-discipline teams.
• Strong communication, influencing and negotiating skills.

At Siemens, we believe that work should work for you. We go beyond standard benefits to create an environment where our people feel supported, empowered and valued both professionally and personally.

Wellbeing:

• Flexible working
• 24/7 Mental health support
• Subsidised gym memberships
• Subsidised Bupa healthcare
• Enhanced sick pay

Financial:

• Match and More pension
• Life assurance
• Perks at Work discounts
• Cycle to Work scheme
• Annual Bonus

Family:

• Day-one maternity and paternity rights
• Shared parental leave
• Extra holidays for length of service
• Generous time off - including volunteering days and sabbaticals

Personal Growth:

• Access to online learning
• Support for external training and development opportunities
• Inclusive culture promoting equality and belonging
• Active employee networks
• Opportunities to grow your skills and career

Join Siemens where your wellbeing, growth, and future matter.

Transform The Everyday with us

We value your unique identity and perspective and are fully committed to providing equitable opportunities and building a workplace that reflects the diversity of society. Come bring your authentic self and create a better tomorrow with us!

We are a Disability Confident Leader and welcome applications from all individuals, including those with disabilities. If you require any reasonable adjustments during the recruitment process, please contact your recruiter, who will be happy to support you.

At Siemens, we promote a growth mindset, the self-belief that we can learn and grow, take on new challenges and adapt to change. If you don't match all the criteria for this role but feel you have transferable skills to enable you to succeed, we encourage you to apply.